SC42DHU-3 is a secure 4-port 4K30 UHD DVI-I to HDMI KVM combiner. It enables users to share peripherals - keyboard, video, mouse, audio and USB - between two different security-level networks/computers while isolating all hosts and protecting against data leakage and malicious attacks through shared peripherals. It also enables assigning a USB port to a specific computer while switching other peripherals, such as when a USB smart card reader must remain mapped to a certain computer. SC42DHU-3 provides the highest possible isolation between connected computers and is designed to meet the security requirements of government agencies, military, financial institutions, and similar security-sensitive customers.